Physical Activity Is not Associated with Estimated Glomerular Filtration Rate among Young and Middle-Aged Adults: Results from the Population-Based Longitudinal Doetinchem Study

Gerrie-Cor M. Herber-Gast*, Gerben Hulsegge, Linda Hartman, W. M. Monique Verschuren, Coen D. A. Stehouwer, Ron T. Gansevoort, Stephan J. L. Bakker, Annemieke M. W. Spijkerman

*Corresponding author for this work

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There is debate as to whether physical inactivity is associated with reduced kidney function. We studied the prospective association of (changes in) physical activity with estimated glomerular filtration rate (eGFR) in adult men and women. We included 3,935 participants aged 26 to 65 years from the Doetinchem Cohort study, examined every 5 years for 15 years. Physical activity was assessed at each round using the Cambridge Physical Activity Index. Using the CKD-EPI (Chronic Kidney Disease Epidemiology Collaboration) equation, GFR was estimated from routinely measured cystatin C concentrations, examining all available samples per participant in one assay run. We determined the association between 1) physical activity and eGFR and 2) 5-year changes in physical activity (becoming inactive, staying inactive, staying active, becoming active) and eGFR, using time-lagged generalized estimating equation analyses. At baseline, 3.6% of the participants were inactive, 18.5% moderately inactive, 26.0% moderately active, and 51.9% active. The mean (+/- SD) eGFR was 107.9 (+/- 14.5) mL/min per 1.73 m(2). Neither physical activity nor 5-year changes in physical activity were associated with eGFR at the subsequent round. The multivariate adjusted beta eGFR was 0.57 mL/min per 1.73 m(2) (95% Confidence Interval (CI) -1.70, 0.56) for inactive compared to active participants. Studying changes in physical activity between rounds, the adjusted beta eGFR was -1.10 mL/min per 1.73 m(2) (95% CI -4.50, 2.30) for those who stayed inactive compared with participants who became active. Physical activity was not associated with eGFR in this population-based study of adults.
Original languageEnglish
Article numbere0133864
Issue number10
Publication statusPublished - 14 Oct 2015

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